Connecticut sent over 50,000 men to the Union Army in the Civil War. They were organized into 30 regiments of infantry, 1 of cavalry, and 2 of heavy artillery, as well as 3 batteries of light artillery. Around 1,270 men from Connecticut were at the Battle of Gettysburg, organized into five infantry regiments and one light artillery battery. Around 340 men (27%) became casualties in the battle. (see the States at Gettysburg)
One of the army’s eight corps commanders, Major General John Sedgwick, commander of the Sixth Corps, was from Connecticut.